package com.jaydenxiao.common.commonutils;

import android.app.Activity;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.net.Uri;
import android.os.Build;
import android.os.Handler;
import android.os.Message;
import android.support.v4.content.FileProvider;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;


import com.jaydenxiao.common.R;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.lang.ref.WeakReference;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

public class UpdateManager {

	private WeakReference<Context> mContext;
	
	//提示语
	private String updateMsg = "有最新的软件包哦，亲快下载吧~";
	
	private Dialog noticeDialog;
	
	private Dialog downloadDialog;
	 /* 下载包安装路径 */
    private String savePath = "";//"/sdcard/baijin/";
    
    private String saveFileName = "";//savePath + "baijin.apk";

    /* 进度条与通知ui刷新的handler和msg常量 */
    private ProgressBar mProgress;
	private ImageView close;
	private String mDownload = "";
	private TextView textView;
    
    private static final int DOWN_UPDATE = 1;
    
    private static final int DOWN_OVER = 2;
    private static final int DOWN_ERROR = 3;
    
    private int progress;
    
    private Thread downLoadThread;
    
    private boolean interceptFlag = false;
    
    private Handler mHandler = new Handler(){
    	public void handleMessage(Message msg) {
    		switch (msg.what) {
			case DOWN_UPDATE:
				mProgress.setProgress(progress);
				textView.setText(progress + "%");
				break;
			case DOWN_OVER:
				installApk();
				downloadDialog.dismiss();
				break;
			case DOWN_ERROR:
				ToastUitl.showShort("下载失败...");
				if(null != downloadDialog) downloadDialog.cancel();
				break;
			default:
				break;
			}
    	};
    };
    
	public UpdateManager(Context context) {
		this.mContext = new WeakReference<>(context);
	}
	
	//外部接口让主Activity调用
	public void checkUpdateInfo(String note, String download, boolean androidIsMust){
		if(mContext.get() !=null){
			showNoticeDialog(note,download,androidIsMust);
		}

	}
	
	
	private void showNoticeDialog(String note, String download, boolean androidIsMust){
		Builder builder = new Builder(mContext.get());
		builder.setTitle("软件版本更新");
		builder.setMessage(note);
		builder.setPositiveButton("下载", new OnClickListener() {
			@Override
			public void onClick(DialogInterface dialog, int which) {
				mDownload = download;
				dialog.dismiss();
				showDownloadDialog(androidIsMust);

//				downloadApk();
//				PublicFunction.showMsg(mContext,"后台下载中");
			}
		});
		if(!androidIsMust){
			builder.setNegativeButton("以后再说", new OnClickListener() {
				@Override
				public void onClick(DialogInterface dialog, int which) {
//					PublicFunction.delayToLogin(mContext.get());
					dialog.dismiss();
				}
			});
		}

		builder.setCancelable(false);
		noticeDialog = builder.create();
		if(!((Activity)mContext.get()).isFinishing()){
			noticeDialog.show();
		}

	}

	private void showDownloadDialog(boolean androidIsMust){
		Builder builder = new Builder(mContext.get());
//		builder.setTitle("软件版本更新");
		
		final LayoutInflater inflater = LayoutInflater.from(mContext.get());
		View v = inflater.inflate(R.layout.download_dialog, null);
		mProgress = (ProgressBar)v.findViewById(R.id.downloaddialog_progress);
		close = (ImageView) v.findViewById(R.id.downloaddialog_close);
		textView = (TextView) v.findViewById(R.id.downloaddialog_count);
		builder.setView(v);
		if(!androidIsMust) {
			close.setOnClickListener(new View.OnClickListener() {
				@Override
				public void onClick(View v) {
					downloadDialog.dismiss();
					interceptFlag = true;
				}
			});
//			builder.setNegativeButton("取消", new OnClickListener() {
//				@Override
//				public void onClick(DialogInterface dialog, int which) {
//					dialog.dismiss();
//					interceptFlag = true;
//				}
//			});
		}
		builder.setCancelable(false);
		downloadDialog = builder.create();
		downloadDialog.show();
		
		downloadApk();
	}
	
	private Runnable mdownApkRunnable = new Runnable() {	
		@Override
		public void run() {
			try {
				URL url = new URL(mDownload);
			
				HttpURLConnection conn = (HttpURLConnection)url.openConnection();
				conn.connect();
				int length = conn.getContentLength();
				InputStream is = conn.getInputStream();
				savePath = mContext.get().getFilesDir().getPath();
				saveFileName = savePath + "/common.apk";
				File file = new File(savePath);
				if(!file.exists()){
					file.mkdir();
				}
				String apkFile = saveFileName;
				File ApkFile = new File(apkFile);
				FileOutputStream fos = new FileOutputStream(ApkFile);
				
				int count = 0;
				byte buf[] = new byte[1024];
				
				do{   		   		
		    		int numread = is.read(buf);
		    		count += numread;
		    	    progress =(int)(((float)count / length) * 100);
		    	    //更新进度
		    	    mHandler.sendEmptyMessage(DOWN_UPDATE);
		    		if(numread <= 0){	
		    			//下载完成通知安装
		    			mHandler.sendEmptyMessage(DOWN_OVER);
		    			break;
		    		}
		    		fos.write(buf,0,numread);
		    	}while(!interceptFlag);//点击取消就停止下载.
				
				fos.close();
				is.close();
			} catch (MalformedURLException e) {
				e.printStackTrace();
				mHandler.sendEmptyMessage(DOWN_ERROR);
			} catch(IOException e){
				e.printStackTrace();
			}
			
		}
	};
	
	 /**
     * 下载apk
     *
	  */
	
	private void downloadApk(){
		downLoadThread = new Thread(mdownApkRunnable);
		downLoadThread.start();
	}
	 /**
     * 安装apk
     *
     */
	private void installApk(){
		File apkfile = new File(saveFileName);
        if (!apkfile.exists()) {
            return;
        }    
//        Intent i = new Intent(Intent.ACTION_VIEW);
//        i.setDataAndType(Uri.parse("file://" + apkfile.toString()), "application/vnd.android.package-archive");
//        mContext.startActivity(i);
//
		Intent intent =new Intent(Intent.ACTION_VIEW);

//判断是否是AndroidN以及更高的版本

		if(Build.VERSION.SDK_INT>= Build.VERSION_CODES.N) {

			Uri contentUri = FileProvider.getUriForFile(mContext.get(),mContext.get().getPackageName() +".fileProvider",apkfile);

			intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

			intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

			intent.setDataAndType(contentUri,"application/vnd.android.package-archive");

					}else{

			intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);

			intent.setDataAndType(Uri.fromFile(apkfile),"application/vnd.android.package-archive");

		}

		mContext.get().startActivity(intent);


	
	}
}
